Home / 18,990-41,220

Finding the Third Proportional to 18,990 and 41,220

Calculator

Solution

The third proportional to 18,990 and 41,220 is: 89,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990 : 41,220 = 41,220 : x
  2. Step 2: Convert to fraction form
    18,990/41,220 = 41,220/x
  3. Step 3: Cross multiply
    18,990x = 41,220 × 41,220
  4. Step 4: Simplify right side
    18,990x = 1,699,088,400
  5. Step 5: Solve for x
    x = 1,699,088,400/18,990
  6. Step 6: Final answer
    x = 89,472.80

Related Problems

Find third proportional to 9,495 and 20,610
Half scale
Find third proportional to 37,980 and 82,440
Double scale
Find third proportional to 18,992 and 41,224
Similar ratio
Find third proportional to 28,485 and 61,830
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.